Mass (kg) 4.869e+24
Mass (Earth = 1) .81476
Equatorial radius (km) 6,051.8
Equatorial radius (Earth = 1) .94886
Mean density (gm/cm^3) 5.25
Mean distance from the Sun (km) 208,200,000
Rotational period (days) 43.0187
Orbital period (days) 224.701
Mean orbital velocity (km/sec) 35.02
Orbital eccentricity 0.0068Tilt of axis (degrees) 177.36
Orbital inclination (degrees) 3.394
Equatorial surface gravity (m/sec^2) 8.87
Equatorial escape velocity (km/sec) 10.36
Visual geometric albedo 0.65
Magnitude (Vo) -4.4
Mean surface temperature 22°C
Maximum surface temperature 45 C
Atmospheric pressure (bars) 2.1
Atmospheric composition (partial)
Carbon Dioxide (CO2)
Nitrogen (N)
Mass (kg) 6.421e+23
Mass (Earth = 1) 1.0745e-01
Equatorial radius (km) 3,397.2
Equatorial radius (Earth = 1) 5.32
Mean density (gm/cm^3) 3.94
Mean distance from the Sun (km) 227,940,000
Rotational period (days) 1.025957
Orbital period (days) 32.98
Mean orbital velocity (km/sec) 24.13
Orbital eccentricity 0.0934 Tilt of axis (degrees) 25.19
Orbital inclination (degrees) 1.850
Equatorial surface gravity (m/sec^2) 3.72
Equatorial escape velocity (km/sec) 5.02
Visual geometric albedo 0.15
Magnitude (Vo) -2.0
Mean surface temperature 12°C
Maximum surface temperature 20°C
Atmospheric pressure (bars) 0.5
Atmospheric composition (partial)
Carbon Dioxide (C02)
Argon (Ar)
Donner
Blitzen
Mass (Earth = 1) .81476
Equatorial radius (km) 6,051.8
Equatorial radius (Earth = 1) .94886
Mean density (gm/cm^3) 5.25
Mean distance from the Sun (km) 208,200,000
Rotational period (days) 43.0187
Orbital period (days) 224.701
Mean orbital velocity (km/sec) 35.02
Orbital eccentricity 0.0068Tilt of axis (degrees) 177.36
Orbital inclination (degrees) 3.394
Equatorial surface gravity (m/sec^2) 8.87
Equatorial escape velocity (km/sec) 10.36
Visual geometric albedo 0.65
Magnitude (Vo) -4.4
Mean surface temperature 22°C
Maximum surface temperature 45 C
Atmospheric pressure (bars) 2.1
Atmospheric composition (partial)
Carbon Dioxide (CO2)
Nitrogen (N)
Mass (Earth = 1) 1.0745e-01
Equatorial radius (km) 3,397.2
Equatorial radius (Earth = 1) 5.32
Mean density (gm/cm^3) 3.94
Mean distance from the Sun (km) 227,940,000
Rotational period (days) 1.025957
Orbital period (days) 32.98
Mean orbital velocity (km/sec) 24.13
Orbital eccentricity 0.0934 Tilt of axis (degrees) 25.19
Orbital inclination (degrees) 1.850
Equatorial surface gravity (m/sec^2) 3.72
Equatorial escape velocity (km/sec) 5.02
Visual geometric albedo 0.15
Magnitude (Vo) -2.0
Mean surface temperature 12°C
Maximum surface temperature 20°C
Atmospheric pressure (bars) 0.5
Atmospheric composition (partial)
Carbon Dioxide (C02)
Argon (Ar)